Bumper



Feb, 2e, 1929, 1',7o3,7oo l G. W. YANSS BUMPER Filed March 9, 1926 vwemtoz l George /Yanss a@ v ama Patente Feb. 26, 1929.

'UNITED STATES PATENT OFFICE.

GEORGE W. YANSS, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO AMERICANCHAIN COMPANY, INC., A CORPORATION OF NEW YORK. i

BUMPER.

Application tiled Hatch 9, 1926. Serial No. 93,358.

An object of my invention is to provide a connection for the adjacent ends of bumper bars which affords a firm and rigid union free from vibration and which permits two or more bars to be connected'and disconnected` readily, the invention being of particular utility when embodied in the construction of bumpers comprisin flat strip bars of resilient metal, connecte edge to edge, although I contemplate the use of the improvements in any field of bumper construction for which they are fitted by their nature,

More particularly the primary object of the invention is to provide such a connection comprising a plurality of bars having respectively eyes formed in their lateral extremities and pins fitted in the adjacent eyes of the bars when assembled with their extremities in superimposed relation, the

n pins serving thereb to connect the bars, andhaving means for rawing and maintaining said eyes 1n r1g1d assembly with said pins, the pms being of non-circular cross-section so that no pivotal or rotative movementof the eyes is possible relatively to the pins.

Referring to the drawings, Y Figure 1 is a plan view of a bumper in which is incorporated one form of my invention.

Fig. 2 is a view thereof in front elevation. Fig. 3 is an enlarged fragmentary detail view in horizontal section on the line III- III of Fig. 2, and Fig. 3a shows a modiiication.

Fig. 4 is a detail View in elevation of the preferred form of connecting in, isolated. Fig. 5 is a plan view of a umper of a .different construction from that shown in Figs. l to 4, and showing incorporated therein a modification of my invention.

Fig. 6 is a similar view of another form of bumper and another modification of my invention.

Fig. 7 is a fragmentary view similar to Fig. 3 upon a larger scale of still another modification of the connecting means.`

Fig. 8 is an elevation of shown in Fig. 7, isolated.

Fig. 5a is an enlarged fragmentary sectional view similar to Fig. 3, showing in detail one of the connections illustrated in Fig. 6a is a view similar to Fig. 5, showthe form of pinv the conally throughout their length a distance equal to the Width of the rear bar, and the end of the rear bar spaces the ends of the front bars, so that the three ends adjoin each other edge to edge.

In pursuance of my invention, each of the bars l, l, and 2 is provided at its respectivelateral extremities with eyes 3, and the several eyes of adjacent extremities of the bars when assembled in superimposed relation, as shown in Fig. 2, are transfixed by plins 4,- one at each end of the bumper.

T ese pms may be of any suitable structure and contour to aord a connection which will not permit pivotal or rotative movement of the eyes relativel to the pins, and as one 'convenient form otY pin for this purpose I have shown the pins 4 as having shanks `5 shaped in cross-section substantially like the conventional cam, as shown in Fig. 3, the shank being provided with a 1ongitudinal rib 6 which renders it non-circular in contour, the rib 6 being adapted to enter the space between the end. 7 of the eye l3 and the region 8 at which the eye merges with the bar.4 y'

In this form the eyes on the bars l, 1, and 2 are similar, and have their ends 7 similarly directed, so that the rib 6 will fit in all of the spaces. The eyes preferably fit snugly around the pin, so that the eyes can not rotate or pivot upon the pin, and when the pin takes the preferred form illustrated in Figs. 1 to 4 of a bolt having a head 4 and retaining nut 9, these 4parts serve as means to drawand maintain the eyes in rigid assembly with the pins, also permitting ready connection and disconnection of these associated parts.

Fig. 3a illustrates a joint in which a pin having a rib 6a of modified cross-section is assembled in non-rotatable relation with the eyes, of which one is shown. at 3a, this constituting a niodiied form of non-pivotal joint.

The invention may be embodied in other forms of bumper and with connecting pins of modified contour, and in Fig. 5 I have shown a bumper having;` front bars 1l like the front bars of the bumper already illustrated and described, these bars having;` their lateral extremities formed into eyes 13 fitted with pins 1st of triangular crosssection, Which serves as another serviceable form ot non-circular pin adapted to prevent rotative and pivotal movement of the pin and eyes relatively to cach other, Tivo rear-bars 12, 12, are shown in the bumper, havingeyes 13 like the eyes on the bars 12, and fitted to the pins 11 between the eyes on the bars 11, spacing the latter apart, and the ends 15 ot' the bars 12 are carried forward with reverse bends 1G and joined to the front bars by clamps, as indicated at 17.

In Fie. 6 is shown a bumper having;r upper and lower bars 21 and a rear bar 22 joined at their ends by square pins 24, translixing eyes of similar shape, 23, formed at the lateral extremities of the bars 21 and 22. In all of the bumper connections ,above described the eyes are formed by bending; the bar ends in the same direction, but the. liront and rear bars may have the eyes ltermed by bending the rear bar-end in an opposite direction from that of the front bar-ends. Such a term is shown in Fig. 7, in which the eye 33 of the front bar 31 is bent around pin 3l having an oval shank, as shown in cross-section in Fig. 7 and in elevation in Fig. 8, While the corresponding eye of the rear bar 32 is formed by bending the bar-end around the pin 34 in the opposite direction.

By thus connecting the eyes at the lateral extremities of the component bars of multibar bumpers With pins of non-circular section upon which the eyes are fitted non-pivotally and non-rotatably, the resistance of the bumper structure to deflection by impacts received adjacent to the ends is increased considerably as compared with the resistance offered by 'bumpers having pivotal or, rotatable `bar-end connections.

Having described my invention, I claim '1. In a connection for bumper bars a plurality of bars provided respectively with eyes, and a. pin of non-circular section fitted non-rotatably Within said eyes and serving thereby to connect said bars with each other in such a manner as to prevent any pivotal action of the bars relatively to the pin.

2. In a. connection tor bumper bars a plurality of bars provided respectively with eyes, and a pin oi non-circular section itted non-rotatably within said eyes and serving thereby to connect said bars with each other in such a manner as to prevent any pivotal action of the bars relatively to the pin, and

means for drawing' and maintaining said eyes in rigid assembly with said pin.

3. In a connection for bumper bars a plurality of bars provided respectively at their lateral extremities with eyes, and a pin ol. non-circular cresssection litted within said eyes and serving thereby to connect said bars, and means loi.' drawing` and maintainingY said eyes in rigid assembly with said pin.

f1. In a connection Jfor tlat strip bumper bars a plurality of bars provided respectively with eyes, a pin fitted within said eyes and serving thereby to connect said bars, said pin having a rib intervening between the shank of the pin and the end ot the bar forming the eye, and means tor drawing and maintaining said eyes in rigid assembly with said pin.

5. A connection t'or bumper bans, comprising a pin, a plurality of bars provided respectively at their lateral extremities With eyes, and having said extremities arranged in proximity to each other, a pin fitted nonpivotally Within said eyes and serving thereby to connect said bars, and means for drawing and maintaining said eyes in rigid assembly with said pin.

(i. In a connection for bumper bars a plurality of bars provided respectively With eyes, and a headed pin fitted Within said eyes and serving` thereby to connect said bars, said pin being ot non-circular crosssection, and "aid eyes being bent around said pin in opposite directions.

7. In a connection for bumper bars a plurality et b ars provided respectively with eyes, .and a headed pin iitted Within said eyes and serving thereby to connect said bars, said pin beine,` ot' non-circular crosssection, and said eyes being bent around said pin in opposite directions with their eye joints covered by said head of the pin.

8. In a bumper a plurality of bow-shaped front bars provided respectively at their lateral extremities with eyes, a pin of noncircular section fitted Within said eyes non rotatably and serving thereby to connect said bars, and a rear bar having eyes litted upon said pinbetwcen said front-bar eyes, to space the front bars apart in vertical position, said rear-bar being connected rigidly with said front bars also at its middle region, forming two subsidiary bows connected rigidly at each end with the front bars and adapted to have a, connection at their resilient middle portions with th? chassis ot ,a car.

9. In a bumper, a plurality of bow-shaped front bars provided respectively at their lateral extremities with curved connector port-ions, a pin fitted Within said curved connector portions non-rotatably and serving thereby to connect said bars, and a rear bar structure comprising two bars each having adjacent to its outer end a connector portion i'itted non-rotatably upon one of said pins between said front bar connector portions, to space the front bars apart in vertical position, said rear bars being each connected rigidly with said front bars at their 5 middle region also, forming two subsidiary bows connected rigidly at each end with the front bars and adapted to have a connection at their resilient middlel portions with the chassis of a car.

10 10.- In a bumper, a plurality of bars provided respectively with curved connector ortions adjacent to their ends and a pin tted non-rotatably within said curved conspecification. GEORGE W. YAN SS. 

